link_to_block in Rails?

Ever since Seaside was featured in Ruby On Rails podcast, I was wondering if there's any use for having a link_to_block method...

    <% variable = Time.now %>
    <%= link_to_block("Click me to execute a block of code") do |c| 
               c.render(:text => "Time.now = \"#{Time.now}\"<br />variable = \"#{variable}\"")
    end %>        

I guess the only way to find out is to have it available first...

    # paste everything into app/controllers/application.rb
    # to empower all your controllers
         
    # all links generated by 'link_to_block' goes here
    def continued
      # should probably use Drb Hash object instead of global variable $PROCHASH
      if $PROCHASH and $PROCHASH[@session.session_id] and
          (block = $PROCHASH[@session.session_id][params[:id]]) and 
          block.respond_to?(:call)       
        block.call(self)      
      else
        raise "No block to continue for '#{params[:id]}'"
      end
    end
       
    # similar to 'link_to', but accepts a block of code instead of URL/HTTP options
    # when clicked, the block is executed
    def link_to_block(text, &block)
      # should probably use Drb Hash object instead of global variable $PROCHASH
      $PROCHASH ||= Hash.new(:created_at => Time.now)
      action_name = text.to_sym.to_s
      $PROCHASH[@session.session_id] ||= Hash.new
      $PROCHASH[@session.session_id].merge!({
        action_name => Proc.new(&block),
      })
      # we do have to remember to house-keep this hash... someday
      url = url_for(:action => 'continued', :id => action_name)
      "<a xhref=\"#{url}\">#{CGI.escapeHTML(text)}</a>"
    end
         
    # makes it accessible within views (e.g. rhtml)
    helper_method :link_to_block    

An example of clicking a link_to_block and seeing the variable in the block...